1
 2
 3
 4
 5
 6
 7
 8
 9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
// Copyright (c) 2018 the capnproto-rust contributors
//
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

//! Functions providing low level access to encoded data.

use traits::{IntoInternalListReader, IntoInternalStructReader};

/// Gets a slice view of the data section of a struct.
pub fn get_struct_data_section<'a, T>(value: T) -> &'a [u8]
    where T: IntoInternalStructReader<'a>
{
    value.into_internal_struct_reader().get_data_section_as_blob()
}

// TODO: get_struct_pointer_section()

/// Gets the size of the elements in a list.
pub fn get_list_element_size<'a, T>(value: T) -> ::private::layout::ElementSize
    where T: IntoInternalListReader<'a>
{
    value.into_internal_list_reader().get_element_size()
}

/// Gets the number of bits between successive elements in a list.
pub fn get_list_step_size_in_bits<'a, T>(value: T) -> u32
    where T: IntoInternalListReader<'a>
{
    value.into_internal_list_reader().get_step_size_in_bits()
}

/// Gets a slice view of a list, exluding any tag word.
pub fn get_list_bytes<'a, T>(value: T) -> &'a [u8]
    where T: IntoInternalListReader<'a>
{
    value.into_internal_list_reader().into_raw_bytes()
}